Process and apparatus for producing laminated sheet glass



March 5, 1935. J. 1.. DRAKE PROCESS AND APPARATUS FOR PRODUCING LAMINATED SHEET GLASS Filed Aug. 14, 1930 INVENTOR Jbhn L. DraKe r 1 ATTORN EY PatentedMar.5-,1935 1 1 992 997 UNITED; STATES PATENT OFFICE PROCESS AND APPARATUS FOR PRODUC- ING LAlVIINATED SHEET GLASS John L. Drake,'Toledo, Ohio, assignor to Libbey- Owens-Ford Glass Company, Toledo, Ohio, a

corporation of Ohio Application August 14, 1930, Serial No. 475,217 11 Claims. (01. 49-s1) This invention relates to the manufacture of of the following description when taken in conlaminated sheet glass and particularly to an imnection with the accompanying drawing.

proved process and apparatus for sealing or lut- In the drawing forming a part of this appliing the edges thereof. cation and wherein like numerals are employed Laminated glass is ordinarily p'roduced by unitto designate like parts throughout the same.

ing two or more sheets of glass and one or more Fig. 1 is a perspective sectional View of a sheet sheets of a suitable non-brittle material to form of laminated glass prior to the sealing thereof.

a composite sheet, one sheet of non-brittle mate- Fig. 2 is a side elevation, partially in section,

rial being usually interposed between and bonded. of an improved sealing machine provided by the to two sheets of glass. When the proper mate present invention, 10 rials are used and an adequate bond obtained Fig. 3 is anend elevation of the sealing mabetween the several sheets orlaminations, lamichine, partially broken away, and hated glass is desirable for the reason that it is Fig. 4 is a fragmentary sectional view showing practically non-shatterable or non-scatterable. e l te Sheet after being d- In order to protect the non-brittle sheet and the In Fig. 1 of the drawing, there is illustrated a bond between the several laminations from dis-- sheet of laminated o mp sit ass 5 mp s d turbing atmospheric conditions, the practice of Of W e s of p b y transparent glass 6 sealing or luting the edges of the laminated sheet and between Which is p ed a S t 0 memis sometimes followed. This scaling is accom brane 8 of some suitable non-brittle material plished by first providing a. continuous channel ed bo d o t glass Sheets y y Suit- 9 or groove around the edges of the laminated sheet a o v nt. adhe ive or he li 9 w e y 0 Or between the adjacent sheets of glass and in then ate a unitary structure. The surfaces of the $1555 filling. in this channel or groove with a suitable e ts may r may not be gr un nd polished,

, sealing material. The formation of the groove as desire n it is to be u derstood that the is preferably accomplished by cutting out or represent invention is not restricted to any partic- 25 moving a. portion of the non-brittle material ular type of laminated glass, the ma ls us d from around the edges of the laminated sheet in its Structure 0 the 9 1 Of laminatingto give the desired space for sealing. v Shown in a i uou c an e 01' The general object of the present invention is g v 10 iS P ov d a u d t edges of t t provision of a v l d improved process laminated sheet between the two sheets of'glass and apparatus whereby the sealing or luting of nd it is into this channel or groove that the seal the edges of laminated sheets of glass may be rapis p o be placed S0 to Protect the 0 idly and conveniently efiected in a thorough and i t a n o 8 a d h bending me u 9 m i t r, from the atmosphere. This channel or groove 35 Another object of the invention is the provision y be formed by uniting the glass ets with a 35 of such a, process and apparatus wherein the sealslightly smaller sheet of non-brittle material, 01 ing material is first set in motion and then forced the S et o n -b tt material y be initially I into the groove or channel in the laminated sheet as large as the lass sh ets and th n s s qu ntby utilizing the kinetic energy of the sealing maly cut back from the edges of the glass sheets to terial due to its motion. a form the groove or channel. 40

Another object of the invention is the provi- In FigS- 2 end 3 is Shown an improved Sealing sion of such a process and apparatus wherein the machine Constructed in accordance With e p essealing material is fed into the groove or channel em invention for carrying out the P nt P ocess. in the laminated sheet by ent ifu l {01.0% This sealing machine includes a horizontal sup- A further object of the invention is the proi' f or frame 11 upon which are mounted, vision of such a process and apparatus wherein adJaFent Its opposite P the horizontally spaced the centrifugal force for feeding the sealing mabeatmgs l2 and 13 w.1thin.Which is journaled terial into place is preferably created incident horizontal shaft 14 driven in any desired manner to the rotation'of a disc-like element immersed such as by means of a belt tramed about the drum or pulley 16 fixed to said shaft 50 within the sealing material and positioned in sub- The sealing unit per se is designated in its enstantlal alignment with respect to the sheet edge to be Sealed b pa ed h refrom. tirely at 17 and comprises a houslng or receptacle 18 preferably removably secured to the support- Other obJectS a d t ges of the lnvening frame 11 at one end thereof by means of bolts so tion 1 become more parent du ing h c u or the like 19, said receptacle containing a suitable into the housing and bein sealing material 20. The housing 18 is also pro-- vided with a bearing portion 21 within which shaft 14 is also .iournaled, said shaft projecting tween two'circular plates 24 and 25 by means of fastening elements 26, said disc tapering to an edge 27 at its periphery. The disc 23 and plates 24 and 25 are secured upon shaft 14 by a nut 28.

As shown, the rotatable sealing element 23 is adapted to have the lower portion of its periphery immersed within the sealing liquid 20, while the upper. portion of its periphery terminates directly beneath a slot 29formed in the top or cover plate 30 of the housing, which top may be hinged as at 31 so that it can be thrown back when it is desired to replenish the supply of sealing liquid within the housing. A drain plug 32 may also be provided to allow for the draining out of the sealing liquid,

when desired, and a packing gland 33 surrounds shaft 14 within bearing portion 21 to prevent the sealing liquid from seeping out past said bearing.

In carrying out the present invention, a desired amount of sealing liquid 20 is first placed within the housing 18 and this liquid is not adapted to entirely fill the housing but, onthe other hand, the amount used must be sufiicient so that the lower portion of the periphery of the sealing element 23 will be immersed therein. The laminated sheet 5 is then held in a vertical position above the slot 29 in the top of housing 18, being supported upon rollers or the like 37 carried by housing 18, with the edge to'be sealed at the bottom thereofor, otherwise'stated, facing downwardly. The shaft 14 is then driven to cause rotation of the sealing element-in the direction indicated by the arrow in Fig. 3 and simultaneously, the sheet is moved horizontally, preferably in a direction opposite to the direction of rotation of disc 23. As the sheet is moved along over the rotating disc and in spaced relation thereto, the said disc rotating at a relatively high speed will function to pick up the sealing material and, by centrifugal force, feed or throw the sealing material into the groove 10 to be sealed so that the said groove or channel will be completely filled to form a seal as indicated at 35 in Fig. 4. It will be noted that the sheet to be sealed is in substantial vertical alignment with the disc 23 but is spaced there above, since the upper portion of said disc terminates beneath the slot 29. In order to prevent flying or scattering of the sealing material, strips of rubber or the like 36 can be carried by the top yet it is to be understood that, in its broadest aspect, the present invention contemplates the practice of any process whereinthe sealing material'is first set in motion and .then forced into place in the sheet edge by utiliaing the kinetic energy of the sealing material due to' its motion.

It is also to be understood that the form of the invention herewith shown and described is to be taken as the preferred embodiment of the same, and that various changesin the shape, size and arrangement of parts may be resorted to without departing from the spirit of the invention or the scope of the subjoined claims.

g reduced indiameter I I claim: v

1. The process of sealing laminated sheet glass, wherein the edges of the sheet to be sealed are each provided with a channel or groove for the reception of a sealing material, which consists in feeding all of the sealing material into place in said channel or groove by centrifugal force.

2. The process of sealinglaminated sheet glass, wherein the edges of the sheet to be sealed are each provided with a channel or groove for the reception of a sealing material, which consists in feeding the sealing material into place in said channel or groove by centrifugal force created incident to the rotation of a disc-like element positioned in substantial alignment with the sheet 1 edge but spaced therefrom.

3. The process of sealing laminated sheet glass, wherein the edges of the sheet to be sealed are each provided with a channel or groove for the reception of a sealing material, which consists in first positioning the sheet with' the edge to be sealed facing downwardly, passing the sheet in a. generally horizontal direction, and feeding all of the sealing material up into place in said channel or groove by centrifugal force.

4. The process of sealing laminated sheet glass, wherein the edges of the sheet to be sealed are each provided with a channel or groove for the reception of a sealing material, which consists in first positioning the sheet with the edge to be sealed facing downwardly, passing the sheet in a generously horizontal direction, and feeding the sealing material up into place in said channel or groove by centrifugal force created incident to the rotation of a. disc-like element positioned in substantial vertical alignment with the sheet edge but spaced therefrom.

5. The process of sealing laminated sheet glass, wherein the edges of the sheet to be sealed are each provided with a channel or groove for the reception of a sealing material, which consists in positioning the laminated sheet in relation to a sealing element in such manner that said sealing element is spaced from the groove or 'channel but in substantial alignment therewith, in moving the sheet relative to said element, and in simultaneously rotating said element to feed the sealing material into the groove or channel by centrifugal force.

6. The-process of sealing laminated sheet glass, wherein the edges of the sheet to be sealed are each provided with a channel or groove for the reception of a sealing material, which consists in positioning the laminated sheet above a sealing element in such a manner that the sealing element is spaced from the groove or channel but in substantialalignment therewith, in moving the sheet substantially horizontally with respect to said element, and in simultaneously rotating said element to feed the sealing material upwardly into the groove or channel by centrifugal force.

'7. Apparatus for sealing laminated sheet glass, wherein the sheet is provided with a channel or groove at the edge thereof to be sealed, including sealing means rotatable about a substantially fixed axis in spaced relation to the sheet, means for supplying a sealing material to said sealing means, and means for driving said sealing means to cause the sealing material to be forced into the channel or groove by centrifugal force. I

8. Apparatus for sealing laminated sheet glass, wherein the sheet is provided with a channel or. groove at the edge thereof to be sealed, including a disc-like element rotatable about a substantially horizontal axis in spaced relation to the sheet, means for supplying a sealing material to said disc-like element, and means for driving said disc-like element to cause the sealing material to be forced into the channel or groove by centrifugal force.

9. Apparatus for sealing laminated sheet glass, wherein the sheet is provided with groove at the edge thereof a housing adapted to contain a sealing liquid, a disc-like sealing element positioned within the housing and rotatable about a substantially horizontal axis, the lower portion of said element being immersed within the sealing liquid and the upper portion thereof terminating beneath the top of said housing, and means for driving said sealing element to cause the sealing liquid to be fed into the channel or groove by centrifugal force.

10. Apparatus for sealing laminated sheet glass, wherein the sheet is provided with a channel or groove at the edge thereof to be sealed, in-

eluding a receptacle adapted to contain a sealing liquid and having a top provided with a slot, and a disc-like sealing element positioned within the receptacle and rotatable about a substantially horizontal axis, the sealing element being positioned in alignment with said slot but terminating therebeneath and the lower portion thereof being immersed within the sealing fluid.

11. Apparatus for sealing laminated sheet glass, wherein the sheet is provided with a channel or groove at the edge thereof to be sealed, including a receptacle adapted to contain a sealing liquid and having a top provided with a slot, a disc-like sealing element positioned within the receptacle and rotatable about a substantially horizontal axis, the sealing element being positioned in alignment with said slot, and for supporting the laminated sheet in a vertical position above said slot and in spaced relation to said disc-like element.

JOHN L. DRAKE. 

